G. Degrande et al., WAVE-PROPAGATION IN LAYERED DRY, SATURATED AND UNSATURATED POROELASTIC MEDIA, International journal of solids and structures, 35(34-35), 1998, pp. 4753-4778
An exact stiffness formalism is presented to study harmonic and transi
ent wave propagation in multilayered dry, saturated and unsaturated is
otropic poroelastic media. Smeulders' extension of Blot's poroelastic
theory is used to incorporate-unsaturated porous media with a small ga
s fraction. A-wide range of problems in geophysical and civil engineer
ing can be treated, ranging from amplification of plane harmonic waves
, dispersion and attenuation of surface waves to transient wave propag
ation due to a forced excitation. The effect of full or partial satura
tion on wave propagation in a poroelastic layered halfspace is demonst
rated in a numerical example, in which the layering is caused by a mov
ing ground water table. (C) 1998 Elsevier Science. All rights reserved
.